tehseen_r
09-07-2009, 05:08 PM
Dear All,
its my first post towards you people.
i have an inverter Altivar 31 by Telemecanique (a brand of Schneider Electric) installed in my chiller.
it was running fine , but now it appears with USF fault on screen.:confused:
i have concern its manual for the remedy, according to it three possible cause :
1) Line supply too low
2)Transient voltage drop
3)damaged load resistor.
i have check it..the line voltages are 380VAC and the parameter defined is also 380VAC (in parameter UnS)
Reset the power alot of time.. but USF cannot dissapear, kindly suggest something to rectify it and whats the reason for this error.
thanks in advance.
its my first post towards you people.
i have an inverter Altivar 31 by Telemecanique (a brand of Schneider Electric) installed in my chiller.
it was running fine , but now it appears with USF fault on screen.:confused:
i have concern its manual for the remedy, according to it three possible cause :
1) Line supply too low
2)Transient voltage drop
3)damaged load resistor.
i have check it..the line voltages are 380VAC and the parameter defined is also 380VAC (in parameter UnS)
Reset the power alot of time.. but USF cannot dissapear, kindly suggest something to rectify it and whats the reason for this error.
thanks in advance.